Crankshaft mounting and crankshaft



June 8, 1954 s TATAR CRANKSHAFT MOUNTING AND CRANKSHAFT 2 Sheets-Sheet 1 Filed Jan. 20, 1950 INVEN TOR. 870/ E Y TATAR June ,8, 1954 s. TATAR 2,680,428

CRANKSHAFT MOUNTING AND CRANKSHAFT Filed Jan. 20, 1950 2 Sheets-Sheet 2 INVENTOR. STANLEY TATAR.

ATTORNK Patented June 8, 1954 2,680,428 CRANKSHAFT MOUNTING AND CRANKSHAF Stanley Tatar, Detroit, Mich. Application January 20, 1950, Serial No. 139,699

2 Claims. (01. 121-194) My invention relates to a new and useful improvement in a crankshaft mounting and the crankshaft adapted for use on internal combustion engines.

It is an object of the present invention to provicle a crankshaft mounting whereby the crankshaft will have a more secure bearing with the result that it will be held more rigid and, in its rotation, run true on its center thus avoiding vibrations and other objectionable features which result from the conventional type of mounting a crankshaft.

Another object of the invention is the provision of a crankshaft mounting in which the thrust of the shaft will be transmitted to a maximum area of the engine so as to relieve any localized point from excessive strain.

Another object of the invention is the provision of a crankshaft so arranged, constructed and mounted that a smooth operation of the engine may be elfected.

Another object of the invention is the provision of a crankshaft having the cranks with arms formed as circular members to properly balance the crankshaft in its operation and eliminate torsional vibration.

Other objects will appear hereinafter.

It is recognized that various modifications and changes may be made in detail of the structure illustrated and it is to be understood that the illustration herein is but the preferred embodiment of the invention.

Forming a part of this specification are drawings in which,

Fig. 1 is a sectional view of the invention from the front and taken on line of Fig. 2.

Fig. 2 is a fragmentary view taken on line 22 of Fig. 1.

Fig. 3 is a view taken slightly reduced in size.

In the drawings I have illustrated an engine block 9 having the water compartment I for the purpose of cooling the cylinders I l in which is a reciprocating piston l2. Forming a part of and projecting downwardly from this block 9 is a plate I3 and formed on which is the bearing pillow M. An annulus is formed on the member l3 and completing this annulus is the arcuate portion which projects downwardly from the lower edge of the plate l3 centrally thereof. Secured to and positioned below the engine block is the crankcase drain pan l6. This annular member I 5 is, as shown in Fig. 2, cut away as at [1 to provide an inner flange l8, the member I 5 serving as a rim. Resting on the inner face on line 33 of Fig. 2

of this rim I5 is the circular member l9 carrying at its upper end the pillow block 20 which is secured to the pillow I 4 to form a bearing. Positioned in this bearing thus formed is a bushing 2| which is in alignment with the bushing 25 supported by the bearing sections 23 and 24 which are carried by the rim or plate 22 projecting downwardly from the engine block. Journaled in these is one end of a crankshaft 26 on which is fixedly mounted a gear 21 meshing with a gear 28 mounted on the stub shaft 29 which projects outwardly from the member [3 adjacent the upper end thereof, these gears serving as conventional timing gears.

A front cover. 30 is secured to the drain pan l6 and the plate l3 by suitable bolts and is provided with a hub 3! in which are positioned the bushings 32 and 33 which serve as a, bearing for the end of the crankshaft 26. A cover plate 34 is mounted on the hub 3| and serves to retain the bushings 32 in position. The crankshaft is provided with the crank 35 and the arms 36 of which are formed circular as fully shown in Fig. 3 and provided with'the openings 38. A connecting rod 31 serves to connect the crank 35 with the piston l2. It is, of course, understood that there will be a plurality of cranks on this crankshaft as the crankshaft is intended for use with a multi-cylinder internal combustion engine.

With this form of mounting of the crankshaft it is believed obvious that the thrust of the crankshaft will be transmitted thru the member I 9 to the meniber l5 so as to be distributed over a large area. In use the form of construction described has shown that some displacements of the crankshaft during its operation are eliminated and a durable smooth running, structure is thus provided. With this type of mounting and the type of crankshaft illustrated the tortional vibrations are also reduced thus increasing the efiiciency of the engine itself.

What I claim is:

1. In combination, an internal combustion engine cylinder block; a plate on the forward end of said block; an arcuate extension projecting downwardly from the central portion of the lower edge of said plate; a pillow block on said plate at the upper central portion of said recess; an annular supporting member positioned in the said extension and bearing against the same throughout the length thereof and extending upwardly into a recess formed in said extension at the central portion thereof; and a pillow block on the upper central portion of said annular member secured to said first named pillow block to form a bearing.

2. In an internal combustion engine, a cylinder block; a plate on the forward end of said block; an arcuate extension projecting downwardly from the central portion of the lower edge of said plate; there being formed inwardly of the lower edge of said plate at the central portion thereof, a recess; a pillow block on said plate at the upper central portion of said recess; an annular supporting member positioned in said extension and bearing against the face of same throughout the length thereof and extending upwardly into said recess and bearing against said plate at the recessed portion; a pillow block at the upper central portion of said annular member, secured to said first named pillow block to form a bearing.

References Cited in the file of this patent UNITED STATES PATENTS Number Number 15 58,096

Name Date Walrath Apr. 30, 1901 Coffin May 21, 1912 Vincent May 20, 1930 Stevens June 21, 1932 Ryder July 30, 1940 Boulet Aug. 12, 1941 Kinnucan Feb. 8, 1944 Brill Mar. 20, 1945 FOREIGN PATENTS Country Date Denmark Oct. 21, 1940 

